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Table 1 Characteristics of the study population, n = 7,915

From: Compliance with national recommendations for exercise during early pregnancy in a Danish cohort

Maternal age (years)

n/(%)*

 <25

394 (5.0)

 25-29

2342 (29.6)

 30-34

3160 (39.9)

 35-39

1650 (20.8)

 ≥40

350 (4.4)

Parity

 

 Nulliparous

4717 (59.6)

 Multiparous

3157 (39.9)

Degree of pregnancy planning

 

 Very planned

3506 (44.3)

 Rather planned

2135 (27.0)

 Neither planned nor unplanned

1270 (16.0)

 Rather unplanned

354 (4.5)

 Very unplanned

313 (4.0)

Method of conception

 

 Spontaneous

6656 (84.1)

 Assisted reproductive technology

894 (11.3)

Smoking before pregnancy

 

 Yes

758 (9.6)

 No

6712 (84.8)

Physical exercise before pregnancy

 

 Yes

5675 (71.7)

 No

2240 (28.3)

Body mass index (kg/m2)

 

 <18.5

409 (5.2)

 18.5-24.9

5610 (70.9)

 25-29.9

942 (11.9)

 ≥30

 

Disorders

 

 Chronic disorders*

948 (12.0)

 Mental disorders

189 (2.4)

 None

5725 (72.3)

 Other disorders¤

558 (7.0)

Reads and understands Danish language

 

 Yes

7505 (94.8)

 No

349 (4.4)

Educational level

 

 Advanced degree

3561 (45.0)

 3-4 years higher education

2267 (28.6)

 1-2 years higher education

511 (6.5)

 Skilled worker

251 (3.2)

 No education

524 (6.6)

Occupation

 

 Employed

5297 (66.9)

 Unemployed

469 (5.9)

 Student

1182 (14.9)

 Other†

275 (3.5)

  1. *Chronic diseases; Hypertension, cardiac diseases, pulmonary diseases, diabetes, metabolic disorders, arthritis, epilepsy and migraine.
  2. ¤Other diseases reported were e.g. skin diseases, systemic lupus erythematosis, celiac disease, inflammatory bowel disease, hepatitis, gallstones, multiple sclerosis, thrombophilia, and polycystic ovarian syndrome.
  3. †Including stay at home mothers, pensioners and women on maternity leave.
  4. Due to missing data in some categories will the sum of women differ between categories.